Suchergebnisse

Ample opportunities mostly regulated : political advertising across the world / Christina Holtz-Bacha -- Modern political advertising / Steve Jarding, Steve Bouchard and Justin Hartley -- Methodological approaches / Michael W. Kearney and Mary C. Banwart -- Gender and political advertising : content and effects / Dianne Bystrom -- Negative advertising / Todd L. Belt -- The effects of political advertising / Travis N. Ridout and Jenny L. Holland -- Political advertising in Argentina / Martin D'Alessandro -- Prime time electoral propaganda : the Brazilian model of free airtime / Alessandra Alde and Felipe Borba -- Political advertising in Chile : state of play in a period of changes / Alberto Pedro Lopez-Hermida Russo -- The role of political advertising in the Czech Republic / Jan Jirak and Anna Matukova -- Political advertising in France : the story and effects of a slow liberalization / Alexandre Borrell and Jamil Dakhlia -- Does political advertising still have an impact on the outcome of election campaigns' political advertising in Hungary / Jolan Roka -- Political advertising in Italy / Edoardo Novelli -- A string of phenomena : a meta-ethnographic synthesis of qualitative studies and reviews of the advertising campaign of the 13th General Election in Malaysia / Aida Mokhtar -- The lousy avalanche : political advertising in Mexico / Julio Juarez-Gamiz and Marco Arellano-Toledo -- Political advertising in Turkey / Baki Can -- Political advertising in Spain (1977-2015) : from education to indirect effects / Teresa Sadaba and Matias Jove -- The longest running series on television : party political broadcasting in Britain / Simon Cross and Dominic Wring -- Bulgaria : election advertising in mediatized politics / Lilia Raycheva -- Audio-visual political advertising in Finland / Tom Moring -- Media, political advertising and election campaigning in Russia / Sergei A. Samoilenko and Elina Erzikova -- Sweden : ten years with television advertising / Bengt Johansson -- The wild, wild west : political advertising in the United States / Marion Just and Ann Crigler -- Political advertising in Australia : the dominance of television / Rodney Smith and Stephen Mills -- Political advertising in Canada : navigating the waters of free and fair elections / Guy Lachapelle and Tristan Masson -- Political advertising in Colombia : between the narratives of war and peace / Miguel Garcia-Sanchez and Jair Alberto Arciniegas -- A serious matter : political advertising in Germany / Christina Holtz-Bacha -- Japanese political advertising in a changing media and electoral environment / Jinah Lee -- Political advertising in the Netherlands : (still) little ado about (almost) nothing / Rens Vliegenthart and Sanne Kruikemeier -- Towards professionalization and Americanization : audiovisual political advertising in Poland (1989-2015) / Boguslawa Dobek-Ostrowska -- The rise of television advertising in a traditional campaign environment : the case of South Africa / Robert Mattes and Ian Glenn -- Conclusion : democracy and political advertising / Marion Just

Ample opportunities mostly regulated : political advertising across the world / Christina Holtz-Bacha -- Modern political advertising / Steve Jarding, Steve Bouchard & Justin Hartley -- Methodological approaches / Michael W. Kearney & Mary C. Banwart -- Gender and political advertising : content and effects / Dianne Bystrom -- Negative advertising / Todd L. Belt -- The effects of political advertising / Travis N. Ridout & Jenny L. Holland -- Political advertising in Argentina / Martin D'Alessandro -- Prime time electoral propaganda : the Brazilian model of free airtime / Alessandra Alde & Felipe Borba -- Political advertising in Chile : state of play in a period of changes / Alberto Pedro Lopez-Hermida Russo -- The role of political advertising in the Czech Republic / Jan Jirak & Anna Matukova -- Political advertising in France : the story and effects of a slow liberalization / Alexandre Borrell & Jamil Dakhlia -- Does political advertising still have an impact on the outcome of election campaigns' political advertising in Hungary / Jolan Roka -- Political advertising in Italy / Edoardo Novelli -- A string of phenomena : a meta-ethnographic synthesis of qualitative studies and reviews of the advertising campaign of the 13th General Election in Malaysia / Aida Mokhtar -- The lousy avalanche : political advertising in Mexico / Julio Juarez-Gamiz & Marco Arellano-Toledo -- Political advertising in Turkey / Baki Can -- Political advertising in Spain (1977-2015) : from education to indirect effects / Teresa Sadaba & Matias Jove -- The longest running series on television : party political broadcasting in Britain / Simon Cross and Dominic Wring -- Bulgaria : election advertising in mediatized politics / Lilia Raycheva -- Audio-visual political advertising in Finland / Tom Moring -- Media, political advertising and election campaigning in Russia / Sergei A. Samoilenko & Elina Erzikova -- Sweden : ten years with television advertising / Bengt Johansson -- The wild, wild west : political advertising in the United States / Marion Just & Ann Crigler -- Political advertising in Australia : the dominance of television / Rodney Smith & Stephen Mills -- Political advertising in Canada : navigating the waters of free and fair elections / Guy Lachapelle & Tristan Masson -- Political advertising in Colombia : between the narratives of war and peace / Miguel Garcia-Sanchez & Jair Alberto Arciniegas -- A serious matter : political advertising in Germany / Christina Holtz-Bacha -- Japanese political advertising in a changing media and electoral environment / Jinah Lee -- Political advertising in the Netherlands : (still) little ado about (almost) nothing / Rens Vliegenthart & Sanne Kruikemeier -- Towards professionalization and Americanization : audiovisual political advertising in Poland (1989-2015) / Boguslawa Dobek-Ostrowska -- The rise of television advertising in a traditional campaign environment : the case of South Africa / Robert Mattes & Ian Glenn -- Conclusion : democracy and political advertising / Marion Just.

Introduction / Marion Just and Christina Holtz-Bacha -- 1. Did Twitter kill the boys on the bus? : a report from the Romney campaign in 2012 / Peter Hamby -- 2. Tweeting to the press? : Effects of political Twitter activity on offline media in the 2013 German election campaign / Christina Holtz-Bacha and Reimar Zeh -- 3. U.S. political journalists' use of Twitter : lessons from 2012 and a look ahead / Logan Molyneux, Rachel R. Mourao, and Mark Coddington -- 4. Media coverage of an election campaign on Twitter : the case of Belgium in the EU elections / Evelien D'heer and Pieter Verdegem -- 5. Communication with constituents in 140 Characters : how members of Congress used Twitter to get out the vote in 2014 / Heather K. Evans -- 6. South Korean citizens' political information sharing on Twitter during the 2012 general election / Jisue Lee, Hohyon Ryu, Lorri Mon, and Sung Jae Park -- 7. Message repetition in social media : presidential candidate Twitter feeds in the 2012 U.S. general election / Kate Kenski and Bethany A. Conway -- 8. Campaigning on Twitter : the use of social media in the 2014 European elections in Italy / Sara Bentivegna and Rita Marchetti -- 9. Candidate use of Twitter and the intersection of gender, party, and position in the race : a comparison of competitive male/female Senate races in 2012 and 2014 / Marion R. Just, Ann N. Crigler, and Rose A. Owen -- 10. Who gets to say #areyoubetteroff? : promoted trends and bashtagging in the 2012 U.S. Presidential election / Joel Penney -- 11. Parties, leaders, and online personalization : Twitter in Canadian electoral politics / Tamara A. Small -- 12. Social media coming of age : developing patterns of Congressional Twitter use, 2007-2014 / David S. Lassen and Leticia Bode -- 13. From a tweet to a seat : Twitter, media visibility, and electoral support / Reimar Zeh -- Conclusion / Richard Davis.

Sparse linear prediction methods suffer from decreased prediction accuracy when the predictor variables have cluster structure (e.g., highly correlated groups of variables). To improve prediction accuracy, various methods have been proposed to identify variable clusters from the data and integrate cluster information into a sparse modeling process. But none of these methods achieve satisfactory performance for prediction, variable selection and variable clustering performed simultaneously. This paper presents Variable Cluster Principal Component Regression (VC‐PCR), a prediction method that uses variable selection and variable clustering in order to solve this problem. Experiments with real and simulated data demonstrate that, compared to competitor methods, VC‐PCR is the only method that achieves simultaneously good prediction, variable selection, and clustering performance when cluster structure is present.